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326f0480b7
linux/sound/pci/pcxhr/pcxhr_core.c
Aya Mahfouz 326f0480b7 ALSA: pcxhr: convert timeval to ktime_t 
This patch is concerned with migrating the time variables in the pcxhr
module found in the sound driver. The changes are concerend with the
y2038 problem where timeval will overflow in the year 2038. ktime_t
was used instead of timeval to get the wall time. The difference
is displayed now in nanoseconds instead of microseconds.

Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-10-28 15:07:25 +01:00

1346 lines
37 KiB
C
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/*
* Driver for Digigram pcxhr compatible soundcards
*
* low level interface with interrupt and message handling implementation
*
* Copyright (c) 2004 by Digigram <alsa@digigram.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/delay.h>
#include <linux/firmware.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <sound/core.h>
#include "pcxhr.h"
#include "pcxhr_mixer.h"
#include "pcxhr_hwdep.h"
#include "pcxhr_core.h"
/* registers used on the PLX (port 1) */
#define PCXHR_PLX_OFFSET_MIN 0x40
#define PCXHR_PLX_MBOX0 0x40
#define PCXHR_PLX_MBOX1 0x44
#define PCXHR_PLX_MBOX2 0x48
#define PCXHR_PLX_MBOX3 0x4C
#define PCXHR_PLX_MBOX4 0x50
#define PCXHR_PLX_MBOX5 0x54
#define PCXHR_PLX_MBOX6 0x58
#define PCXHR_PLX_MBOX7 0x5C
#define PCXHR_PLX_L2PCIDB 0x64
#define PCXHR_PLX_IRQCS 0x68
#define PCXHR_PLX_CHIPSC 0x6C
/* registers used on the DSP (port 2) */
#define PCXHR_DSP_ICR 0x00
#define PCXHR_DSP_CVR 0x04
#define PCXHR_DSP_ISR 0x08
#define PCXHR_DSP_IVR 0x0C
#define PCXHR_DSP_RXH 0x14
#define PCXHR_DSP_TXH 0x14
#define PCXHR_DSP_RXM 0x18
#define PCXHR_DSP_TXM 0x18
#define PCXHR_DSP_RXL 0x1C
#define PCXHR_DSP_TXL 0x1C
#define PCXHR_DSP_RESET 0x20
#define PCXHR_DSP_OFFSET_MAX 0x20
/* access to the card */
#define PCXHR_PLX 1
#define PCXHR_DSP 2
#if (PCXHR_DSP_OFFSET_MAX > PCXHR_PLX_OFFSET_MIN)
#undef PCXHR_REG_TO_PORT(x)
#else
#define PCXHR_REG_TO_PORT(x) ((x)>PCXHR_DSP_OFFSET_MAX ? PCXHR_PLX : PCXHR_DSP)
#endif
#define PCXHR_INPB(mgr,x) inb((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
#define PCXHR_INPL(mgr,x) inl((mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
#define PCXHR_OUTPB(mgr,x,data) outb((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
#define PCXHR_OUTPL(mgr,x,data) outl((data), (mgr)->port[PCXHR_REG_TO_PORT(x)] + (x))
/* attention : access the PCXHR_DSP_* registers with inb and outb only ! */
/* params used with PCXHR_PLX_MBOX0 */
#define PCXHR_MBOX0_HF5 (1 << 0)
#define PCXHR_MBOX0_HF4 (1 << 1)
#define PCXHR_MBOX0_BOOT_HERE (1 << 23)
/* params used with PCXHR_PLX_IRQCS */
#define PCXHR_IRQCS_ENABLE_PCIIRQ (1 << 8)
#define PCXHR_IRQCS_ENABLE_PCIDB (1 << 9)
#define PCXHR_IRQCS_ACTIVE_PCIDB (1 << 13)
/* params used with PCXHR_PLX_CHIPSC */
#define PCXHR_CHIPSC_INIT_VALUE 0x100D767E
#define PCXHR_CHIPSC_RESET_XILINX (1 << 16)
#define PCXHR_CHIPSC_GPI_USERI (1 << 17)
#define PCXHR_CHIPSC_DATA_CLK (1 << 24)
#define PCXHR_CHIPSC_DATA_IN (1 << 26)
/* params used with PCXHR_DSP_ICR */
#define PCXHR_ICR_HI08_RREQ 0x01
#define PCXHR_ICR_HI08_TREQ 0x02
#define PCXHR_ICR_HI08_HDRQ 0x04
#define PCXHR_ICR_HI08_HF0 0x08
#define PCXHR_ICR_HI08_HF1 0x10
#define PCXHR_ICR_HI08_HLEND 0x20
#define PCXHR_ICR_HI08_INIT 0x80
/* params used with PCXHR_DSP_CVR */
#define PCXHR_CVR_HI08_HC 0x80
/* params used with PCXHR_DSP_ISR */
#define PCXHR_ISR_HI08_RXDF 0x01
#define PCXHR_ISR_HI08_TXDE 0x02
#define PCXHR_ISR_HI08_TRDY 0x04
#define PCXHR_ISR_HI08_ERR 0x08
#define PCXHR_ISR_HI08_CHK 0x10
#define PCXHR_ISR_HI08_HREQ 0x80
/* constants used for delay in msec */
#define PCXHR_WAIT_DEFAULT 2
#define PCXHR_WAIT_IT 25
#define PCXHR_WAIT_IT_EXTRA 65
/*
* pcxhr_check_reg_bit - wait for the specified bit is set/reset on a register
* @reg: register to check
* @mask: bit mask
* @bit: resultant bit to be checked
* @time: time-out of loop in msec
*
* returns zero if a bit matches, or a negative error code.
*/
static int pcxhr_check_reg_bit(struct pcxhr_mgr *mgr, unsigned int reg,
unsigned char mask, unsigned char bit, int time,
unsigned char* read)
{
int i = 0;
unsigned long end_time = jiffies + (time * HZ + 999) / 1000;
do {
*read = PCXHR_INPB(mgr, reg);
if ((*read & mask) == bit) {
if (i > 100)
dev_dbg(&mgr->pci->dev,
"ATTENTION! check_reg(%x) loopcount=%d\n",
reg, i);
return 0;
}
i++;
} while (time_after_eq(end_time, jiffies));
dev_err(&mgr->pci->dev,
"pcxhr_check_reg_bit: timeout, reg=%x, mask=0x%x, val=%x\n",
reg, mask, *read);
return -EIO;
}
/* constants used with pcxhr_check_reg_bit() */
#define PCXHR_TIMEOUT_DSP 200
#define PCXHR_MASK_EXTRA_INFO 0x0000FE
#define PCXHR_MASK_IT_HF0 0x000100
#define PCXHR_MASK_IT_HF1 0x000200
#define PCXHR_MASK_IT_NO_HF0_HF1 0x000400
#define PCXHR_MASK_IT_MANAGE_HF5 0x000800
#define PCXHR_MASK_IT_WAIT 0x010000
#define PCXHR_MASK_IT_WAIT_EXTRA 0x020000
#define PCXHR_IT_SEND_BYTE_XILINX (0x0000003C | PCXHR_MASK_IT_HF0)
#define PCXHR_IT_TEST_XILINX (0x0000003C | PCXHR_MASK_IT_HF1 | \
PCXHR_MASK_IT_MANAGE_HF5)
#define PCXHR_IT_DOWNLOAD_BOOT (0x0000000C | PCXHR_MASK_IT_HF1 | \
PCXHR_MASK_IT_MANAGE_HF5 | \
PCXHR_MASK_IT_WAIT)
#define PCXHR_IT_RESET_BOARD_FUNC (0x0000000C | PCXHR_MASK_IT_HF0 | \
PCXHR_MASK_IT_MANAGE_HF5 | \
PCXHR_MASK_IT_WAIT_EXTRA)
#define PCXHR_IT_DOWNLOAD_DSP (0x0000000C | \
PCXHR_MASK_IT_MANAGE_HF5 | \
PCXHR_MASK_IT_WAIT)
#define PCXHR_IT_DEBUG (0x0000005A | PCXHR_MASK_IT_NO_HF0_HF1)
#define PCXHR_IT_RESET_SEMAPHORE (0x0000005C | PCXHR_MASK_IT_NO_HF0_HF1)
#define PCXHR_IT_MESSAGE (0x00000074 | PCXHR_MASK_IT_NO_HF0_HF1)
#define PCXHR_IT_RESET_CHK (0x00000076 | PCXHR_MASK_IT_NO_HF0_HF1)
#define PCXHR_IT_UPDATE_RBUFFER (0x00000078 | PCXHR_MASK_IT_NO_HF0_HF1)
static int pcxhr_send_it_dsp(struct pcxhr_mgr *mgr,
unsigned int itdsp, int atomic)
{
int err;
unsigned char reg;
if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
/* clear hf5 bit */
PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) &
~PCXHR_MBOX0_HF5);
}
if ((itdsp & PCXHR_MASK_IT_NO_HF0_HF1) == 0) {
reg = (PCXHR_ICR_HI08_RREQ |
PCXHR_ICR_HI08_TREQ |
PCXHR_ICR_HI08_HDRQ);
if (itdsp & PCXHR_MASK_IT_HF0)
reg |= PCXHR_ICR_HI08_HF0;
if (itdsp & PCXHR_MASK_IT_HF1)
reg |= PCXHR_ICR_HI08_HF1;
PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
}
reg = (unsigned char)(((itdsp & PCXHR_MASK_EXTRA_INFO) >> 1) |
PCXHR_CVR_HI08_HC);
PCXHR_OUTPB(mgr, PCXHR_DSP_CVR, reg);
if (itdsp & PCXHR_MASK_IT_WAIT) {
if (atomic)
mdelay(PCXHR_WAIT_IT);
else
msleep(PCXHR_WAIT_IT);
}
if (itdsp & PCXHR_MASK_IT_WAIT_EXTRA) {
if (atomic)
mdelay(PCXHR_WAIT_IT_EXTRA);
else
msleep(PCXHR_WAIT_IT);
}
/* wait for CVR_HI08_HC == 0 */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_CVR, PCXHR_CVR_HI08_HC, 0,
PCXHR_TIMEOUT_DSP, &reg);
if (err) {
dev_err(&mgr->pci->dev, "pcxhr_send_it_dsp : TIMEOUT CVR\n");
return err;
}
if (itdsp & PCXHR_MASK_IT_MANAGE_HF5) {
/* wait for hf5 bit */
err = pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0,
PCXHR_MBOX0_HF5,
PCXHR_MBOX0_HF5,
PCXHR_TIMEOUT_DSP,
&reg);
if (err) {
dev_err(&mgr->pci->dev,
"pcxhr_send_it_dsp : TIMEOUT HF5\n");
return err;
}
}
return 0; /* retry not handled here */
}
void pcxhr_reset_xilinx_com(struct pcxhr_mgr *mgr)
{
/* reset second xilinx */
PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC,
PCXHR_CHIPSC_INIT_VALUE & ~PCXHR_CHIPSC_RESET_XILINX);
}
static void pcxhr_enable_irq(struct pcxhr_mgr *mgr, int enable)
{
unsigned int reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
/* enable/disable interrupts */
if (enable)
reg |= (PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
else
reg &= ~(PCXHR_IRQCS_ENABLE_PCIIRQ | PCXHR_IRQCS_ENABLE_PCIDB);
PCXHR_OUTPL(mgr, PCXHR_PLX_IRQCS, reg);
}
void pcxhr_reset_dsp(struct pcxhr_mgr *mgr)
{
/* disable interrupts */
pcxhr_enable_irq(mgr, 0);
/* let's reset the DSP */
PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 0);
msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
PCXHR_OUTPB(mgr, PCXHR_DSP_RESET, 3);
msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
/* reset mailbox */
PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0, 0);
}
void pcxhr_enable_dsp(struct pcxhr_mgr *mgr)
{
/* enable interrupts */
pcxhr_enable_irq(mgr, 1);
}
/*
* load the xilinx image
*/
int pcxhr_load_xilinx_binary(struct pcxhr_mgr *mgr,
const struct firmware *xilinx, int second)
{
unsigned int i;
unsigned int chipsc;
unsigned char data;
unsigned char mask;
const unsigned char *image;
/* test first xilinx */
chipsc = PCXHR_INPL(mgr, PCXHR_PLX_CHIPSC);
/* REV01 cards do not support the PCXHR_CHIPSC_GPI_USERI bit anymore */
/* this bit will always be 1;
* no possibility to test presence of first xilinx
*/
if(second) {
if ((chipsc & PCXHR_CHIPSC_GPI_USERI) == 0) {
dev_err(&mgr->pci->dev, "error loading first xilinx\n");
return -EINVAL;
}
/* activate second xilinx */
chipsc |= PCXHR_CHIPSC_RESET_XILINX;
PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
msleep( PCXHR_WAIT_DEFAULT ); /* wait 2 msec */
}
image = xilinx->data;
for (i = 0; i < xilinx->size; i++, image++) {
data = *image;
mask = 0x80;
while (mask) {
chipsc &= ~(PCXHR_CHIPSC_DATA_CLK |
PCXHR_CHIPSC_DATA_IN);
if (data & mask)
chipsc |= PCXHR_CHIPSC_DATA_IN;
PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
chipsc |= PCXHR_CHIPSC_DATA_CLK;
PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
mask >>= 1;
}
/* don't take too much time in this loop... */
cond_resched();
}
chipsc &= ~(PCXHR_CHIPSC_DATA_CLK | PCXHR_CHIPSC_DATA_IN);
PCXHR_OUTPL(mgr, PCXHR_PLX_CHIPSC, chipsc);
/* wait 2 msec (time to boot the xilinx before any access) */
msleep( PCXHR_WAIT_DEFAULT );
return 0;
}
/*
* send an executable file to the DSP
*/
static int pcxhr_download_dsp(struct pcxhr_mgr *mgr, const struct firmware *dsp)
{
int err;
unsigned int i;
unsigned int len;
const unsigned char *data;
unsigned char dummy;
/* check the length of boot image */
if (dsp->size <= 0)
return -EINVAL;
if (dsp->size % 3)
return -EINVAL;
if (snd_BUG_ON(!dsp->data))
return -EINVAL;
/* transfert data buffer from PC to DSP */
for (i = 0; i < dsp->size; i += 3) {
data = dsp->data + i;
if (i == 0) {
/* test data header consistency */
len = (unsigned int)((data[0]<<16) +
(data[1]<<8) +
data[2]);
if (len && (dsp->size != (len + 2) * 3))
return -EINVAL;
}
/* wait DSP ready for new transfer */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_TRDY,
PCXHR_ISR_HI08_TRDY,
PCXHR_TIMEOUT_DSP, &dummy);
if (err) {
dev_err(&mgr->pci->dev,
"dsp loading error at position %d\n", i);
return err;
}
/* send host data */
PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, data[0]);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, data[1]);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, data[2]);
/* don't take too much time in this loop... */
cond_resched();
}
/* give some time to boot the DSP */
msleep(PCXHR_WAIT_DEFAULT);
return 0;
}
/*
* load the eeprom image
*/
int pcxhr_load_eeprom_binary(struct pcxhr_mgr *mgr,
const struct firmware *eeprom)
{
int err;
unsigned char reg;
/* init value of the ICR register */
reg = PCXHR_ICR_HI08_RREQ | PCXHR_ICR_HI08_TREQ | PCXHR_ICR_HI08_HDRQ;
if (PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & PCXHR_MBOX0_BOOT_HERE) {
/* no need to load the eeprom binary,
* but init the HI08 interface
*/
PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg | PCXHR_ICR_HI08_INIT);
msleep(PCXHR_WAIT_DEFAULT);
PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
msleep(PCXHR_WAIT_DEFAULT);
dev_dbg(&mgr->pci->dev, "no need to load eeprom boot\n");
return 0;
}
PCXHR_OUTPB(mgr, PCXHR_DSP_ICR, reg);
err = pcxhr_download_dsp(mgr, eeprom);
if (err)
return err;
/* wait for chk bit */
return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
}
/*
* load the boot image
*/
int pcxhr_load_boot_binary(struct pcxhr_mgr *mgr, const struct firmware *boot)
{
int err;
unsigned int physaddr = mgr->hostport.addr;
unsigned char dummy;
/* send the hostport address to the DSP (only the upper 24 bit !) */
if (snd_BUG_ON(physaddr & 0xff))
return -EINVAL;
PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX1, (physaddr >> 8));
err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_BOOT, 0);
if (err)
return err;
/* clear hf5 bit */
PCXHR_OUTPL(mgr, PCXHR_PLX_MBOX0,
PCXHR_INPL(mgr, PCXHR_PLX_MBOX0) & ~PCXHR_MBOX0_HF5);
err = pcxhr_download_dsp(mgr, boot);
if (err)
return err;
/* wait for hf5 bit */
return pcxhr_check_reg_bit(mgr, PCXHR_PLX_MBOX0, PCXHR_MBOX0_HF5,
PCXHR_MBOX0_HF5, PCXHR_TIMEOUT_DSP, &dummy);
}
/*
* load the final dsp image
*/
int pcxhr_load_dsp_binary(struct pcxhr_mgr *mgr, const struct firmware *dsp)
{
int err;
unsigned char dummy;
err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_BOARD_FUNC, 0);
if (err)
return err;
err = pcxhr_send_it_dsp(mgr, PCXHR_IT_DOWNLOAD_DSP, 0);
if (err)
return err;
err = pcxhr_download_dsp(mgr, dsp);
if (err)
return err;
/* wait for chk bit */
return pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_CHK,
PCXHR_ISR_HI08_CHK,
PCXHR_TIMEOUT_DSP, &dummy);
}
struct pcxhr_cmd_info {
u32 opcode; /* command word */
u16 st_length; /* status length */
u16 st_type; /* status type (RMH_SSIZE_XXX) */
};
/* RMH status type */
enum {
RMH_SSIZE_FIXED = 0, /* status size fix (st_length = 0..x) */
RMH_SSIZE_ARG = 1, /* status size given in the LSB byte */
RMH_SSIZE_MASK = 2, /* status size given in bitmask */
};
/*
* Array of DSP commands
*/
static struct pcxhr_cmd_info pcxhr_dsp_cmds[] = {
[CMD_VERSION] = { 0x010000, 1, RMH_SSIZE_FIXED },
[CMD_SUPPORTED] = { 0x020000, 4, RMH_SSIZE_FIXED },
[CMD_TEST_IT] = { 0x040000, 1, RMH_SSIZE_FIXED },
[CMD_SEND_IRQA] = { 0x070001, 0, RMH_SSIZE_FIXED },
[CMD_ACCESS_IO_WRITE] = { 0x090000, 1, RMH_SSIZE_ARG },
[CMD_ACCESS_IO_READ] = { 0x094000, 1, RMH_SSIZE_ARG },
[CMD_ASYNC] = { 0x0a0000, 1, RMH_SSIZE_ARG },
[CMD_MODIFY_CLOCK] = { 0x0d0000, 0, RMH_SSIZE_FIXED },
[CMD_RESYNC_AUDIO_INPUTS] = { 0x0e0000, 0, RMH_SSIZE_FIXED },
[CMD_GET_DSP_RESOURCES] = { 0x100000, 4, RMH_SSIZE_FIXED },
[CMD_SET_TIMER_INTERRUPT] = { 0x110000, 0, RMH_SSIZE_FIXED },
[CMD_RES_PIPE] = { 0x400000, 0, RMH_SSIZE_FIXED },
[CMD_FREE_PIPE] = { 0x410000, 0, RMH_SSIZE_FIXED },
[CMD_CONF_PIPE] = { 0x422101, 0, RMH_SSIZE_FIXED },
[CMD_STOP_PIPE] = { 0x470004, 0, RMH_SSIZE_FIXED },
[CMD_PIPE_SAMPLE_COUNT] = { 0x49a000, 2, RMH_SSIZE_FIXED },
[CMD_CAN_START_PIPE] = { 0x4b0000, 1, RMH_SSIZE_FIXED },
[CMD_START_STREAM] = { 0x802000, 0, RMH_SSIZE_FIXED },
[CMD_STREAM_OUT_LEVEL_ADJUST] = { 0x822000, 0, RMH_SSIZE_FIXED },
[CMD_STOP_STREAM] = { 0x832000, 0, RMH_SSIZE_FIXED },
[CMD_UPDATE_R_BUFFERS] = { 0x840000, 0, RMH_SSIZE_FIXED },
[CMD_FORMAT_STREAM_OUT] = { 0x860000, 0, RMH_SSIZE_FIXED },
[CMD_FORMAT_STREAM_IN] = { 0x870000, 0, RMH_SSIZE_FIXED },
[CMD_STREAM_SAMPLE_COUNT] = { 0x902000, 2, RMH_SSIZE_FIXED },
[CMD_AUDIO_LEVEL_ADJUST] = { 0xc22000, 0, RMH_SSIZE_FIXED },
[CMD_GET_TIME_CODE] = { 0x060000, 5, RMH_SSIZE_FIXED },
[CMD_MANAGE_SIGNAL] = { 0x0f0000, 0, RMH_SSIZE_FIXED },
};
#ifdef CONFIG_SND_DEBUG_VERBOSE
static char* cmd_names[] = {
[CMD_VERSION] = "CMD_VERSION",
[CMD_SUPPORTED] = "CMD_SUPPORTED",
[CMD_TEST_IT] = "CMD_TEST_IT",
[CMD_SEND_IRQA] = "CMD_SEND_IRQA",
[CMD_ACCESS_IO_WRITE] = "CMD_ACCESS_IO_WRITE",
[CMD_ACCESS_IO_READ] = "CMD_ACCESS_IO_READ",
[CMD_ASYNC] = "CMD_ASYNC",
[CMD_MODIFY_CLOCK] = "CMD_MODIFY_CLOCK",
[CMD_RESYNC_AUDIO_INPUTS] = "CMD_RESYNC_AUDIO_INPUTS",
[CMD_GET_DSP_RESOURCES] = "CMD_GET_DSP_RESOURCES",
[CMD_SET_TIMER_INTERRUPT] = "CMD_SET_TIMER_INTERRUPT",
[CMD_RES_PIPE] = "CMD_RES_PIPE",
[CMD_FREE_PIPE] = "CMD_FREE_PIPE",
[CMD_CONF_PIPE] = "CMD_CONF_PIPE",
[CMD_STOP_PIPE] = "CMD_STOP_PIPE",
[CMD_PIPE_SAMPLE_COUNT] = "CMD_PIPE_SAMPLE_COUNT",
[CMD_CAN_START_PIPE] = "CMD_CAN_START_PIPE",
[CMD_START_STREAM] = "CMD_START_STREAM",
[CMD_STREAM_OUT_LEVEL_ADJUST] = "CMD_STREAM_OUT_LEVEL_ADJUST",
[CMD_STOP_STREAM] = "CMD_STOP_STREAM",
[CMD_UPDATE_R_BUFFERS] = "CMD_UPDATE_R_BUFFERS",
[CMD_FORMAT_STREAM_OUT] = "CMD_FORMAT_STREAM_OUT",
[CMD_FORMAT_STREAM_IN] = "CMD_FORMAT_STREAM_IN",
[CMD_STREAM_SAMPLE_COUNT] = "CMD_STREAM_SAMPLE_COUNT",
[CMD_AUDIO_LEVEL_ADJUST] = "CMD_AUDIO_LEVEL_ADJUST",
[CMD_GET_TIME_CODE] = "CMD_GET_TIME_CODE",
[CMD_MANAGE_SIGNAL] = "CMD_MANAGE_SIGNAL",
};
#endif
static int pcxhr_read_rmh_status(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
int err;
int i;
u32 data;
u32 size_mask;
unsigned char reg;
int max_stat_len;
if (rmh->stat_len < PCXHR_SIZE_MAX_STATUS)
max_stat_len = PCXHR_SIZE_MAX_STATUS;
else max_stat_len = rmh->stat_len;
for (i = 0; i < rmh->stat_len; i++) {
/* wait for receiver full */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_RXDF,
PCXHR_ISR_HI08_RXDF,
PCXHR_TIMEOUT_DSP, &reg);
if (err) {
dev_err(&mgr->pci->dev,
"ERROR RMH stat: ISR:RXDF=1 (ISR = %x; i=%d )\n",
reg, i);
return err;
}
/* read data */
data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
/* need to update rmh->stat_len on the fly ?? */
if (!i) {
if (rmh->dsp_stat != RMH_SSIZE_FIXED) {
if (rmh->dsp_stat == RMH_SSIZE_ARG) {
rmh->stat_len = (data & 0x0000ff) + 1;
data &= 0xffff00;
} else {
/* rmh->dsp_stat == RMH_SSIZE_MASK */
rmh->stat_len = 1;
size_mask = data;
while (size_mask) {
if (size_mask & 1)
rmh->stat_len++;
size_mask >>= 1;
}
}
}
}
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (rmh->cmd_idx < CMD_LAST_INDEX)
dev_dbg(&mgr->pci->dev, " stat[%d]=%x\n", i, data);
#endif
if (i < max_stat_len)
rmh->stat[i] = data;
}
if (rmh->stat_len > max_stat_len) {
dev_dbg(&mgr->pci->dev, "PCXHR : rmh->stat_len=%x too big\n",
rmh->stat_len);
rmh->stat_len = max_stat_len;
}
return 0;
}
static int pcxhr_send_msg_nolock(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
int err;
int i;
u32 data;
unsigned char reg;
if (snd_BUG_ON(rmh->cmd_len >= PCXHR_SIZE_MAX_CMD))
return -EINVAL;
err = pcxhr_send_it_dsp(mgr, PCXHR_IT_MESSAGE, 1);
if (err) {
dev_err(&mgr->pci->dev,
"pcxhr_send_message : ED_DSP_CRASHED\n");
return err;
}
/* wait for chk bit */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
/* reset irq chk */
err = pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_CHK, 1);
if (err)
return err;
/* wait for chk bit == 0*/
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK, 0,
PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
data = rmh->cmd[0];
if (rmh->cmd_len > 1)
data |= 0x008000; /* MASK_MORE_THAN_1_WORD_COMMAND */
else
data &= 0xff7fff; /* MASK_1_WORD_COMMAND */
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (rmh->cmd_idx < CMD_LAST_INDEX)
dev_dbg(&mgr->pci->dev, "MSG cmd[0]=%x (%s)\n",
data, cmd_names[rmh->cmd_idx]);
#endif
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_TRDY,
PCXHR_ISR_HI08_TRDY, PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
if (rmh->cmd_len > 1) {
/* send length */
data = rmh->cmd_len - 1;
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_TRDY,
PCXHR_ISR_HI08_TRDY,
PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
for (i=1; i < rmh->cmd_len; i++) {
/* send other words */
data = rmh->cmd[i];
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (rmh->cmd_idx < CMD_LAST_INDEX)
dev_dbg(&mgr->pci->dev,
" cmd[%d]=%x\n", i, data);
#endif
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_TRDY,
PCXHR_ISR_HI08_TRDY,
PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
PCXHR_OUTPB(mgr, PCXHR_DSP_TXH, (data>>16)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXM, (data>>8)&0xFF);
PCXHR_OUTPB(mgr, PCXHR_DSP_TXL, (data&0xFF));
}
}
/* wait for chk bit */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR, PCXHR_ISR_HI08_CHK,
PCXHR_ISR_HI08_CHK, PCXHR_TIMEOUT_DSP, &reg);
if (err)
return err;
/* test status ISR */
if (reg & PCXHR_ISR_HI08_ERR) {
/* ERROR, wait for receiver full */
err = pcxhr_check_reg_bit(mgr, PCXHR_DSP_ISR,
PCXHR_ISR_HI08_RXDF,
PCXHR_ISR_HI08_RXDF,
PCXHR_TIMEOUT_DSP, &reg);
if (err) {
dev_err(&mgr->pci->dev,
"ERROR RMH: ISR:RXDF=1 (ISR = %x)\n", reg);
return err;
}
/* read error code */
data = PCXHR_INPB(mgr, PCXHR_DSP_TXH) << 16;
data |= PCXHR_INPB(mgr, PCXHR_DSP_TXM) << 8;
data |= PCXHR_INPB(mgr, PCXHR_DSP_TXL);
dev_err(&mgr->pci->dev, "ERROR RMH(%d): 0x%x\n",
rmh->cmd_idx, data);
err = -EINVAL;
} else {
/* read the response data */
err = pcxhr_read_rmh_status(mgr, rmh);
}
/* reset semaphore */
if (pcxhr_send_it_dsp(mgr, PCXHR_IT_RESET_SEMAPHORE, 1) < 0)
return -EIO;
return err;
}
/**
* pcxhr_init_rmh - initialize the RMH instance
* @rmh: the rmh pointer to be initialized
* @cmd: the rmh command to be set
*/
void pcxhr_init_rmh(struct pcxhr_rmh *rmh, int cmd)
{
if (snd_BUG_ON(cmd >= CMD_LAST_INDEX))
return;
rmh->cmd[0] = pcxhr_dsp_cmds[cmd].opcode;
rmh->cmd_len = 1;
rmh->stat_len = pcxhr_dsp_cmds[cmd].st_length;
rmh->dsp_stat = pcxhr_dsp_cmds[cmd].st_type;
rmh->cmd_idx = cmd;
}
void pcxhr_set_pipe_cmd_params(struct pcxhr_rmh *rmh, int capture,
unsigned int param1, unsigned int param2,
unsigned int param3)
{
snd_BUG_ON(param1 > MASK_FIRST_FIELD);
if (capture)
rmh->cmd[0] |= 0x800; /* COMMAND_RECORD_MASK */
if (param1)
rmh->cmd[0] |= (param1 << FIELD_SIZE);
if (param2) {
snd_BUG_ON(param2 > MASK_FIRST_FIELD);
rmh->cmd[0] |= param2;
}
if(param3) {
snd_BUG_ON(param3 > MASK_DSP_WORD);
rmh->cmd[1] = param3;
rmh->cmd_len = 2;
}
}
/*
* pcxhr_send_msg - send a DSP message with spinlock
* @rmh: the rmh record to send and receive
*
* returns 0 if successful, or a negative error code.
*/
int pcxhr_send_msg(struct pcxhr_mgr *mgr, struct pcxhr_rmh *rmh)
{
int err;
mutex_lock(&mgr->msg_lock);
err = pcxhr_send_msg_nolock(mgr, rmh);
mutex_unlock(&mgr->msg_lock);
return err;
}
static inline int pcxhr_pipes_running(struct pcxhr_mgr *mgr)
{
int start_mask = PCXHR_INPL(mgr, PCXHR_PLX_MBOX2);
/* least segnificant 12 bits are the pipe states
* for the playback audios
* next 12 bits are the pipe states for the capture audios
* (PCXHR_PIPE_STATE_CAPTURE_OFFSET)
*/
start_mask &= 0xffffff;
dev_dbg(&mgr->pci->dev, "CMD_PIPE_STATE MBOX2=0x%06x\n", start_mask);
return start_mask;
}
#define PCXHR_PIPE_STATE_CAPTURE_OFFSET 12
#define MAX_WAIT_FOR_DSP 20
static int pcxhr_prepair_pipe_start(struct pcxhr_mgr *mgr,
int audio_mask, int *retry)
{
struct pcxhr_rmh rmh;
int err;
int audio = 0;
*retry = 0;
while (audio_mask) {
if (audio_mask & 1) {
pcxhr_init_rmh(&rmh, CMD_CAN_START_PIPE);
if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
/* can start playback pipe */
pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
} else {
/* can start capture pipe */
pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
PCXHR_PIPE_STATE_CAPTURE_OFFSET,
0, 0);
}
err = pcxhr_send_msg(mgr, &rmh);
if (err) {
dev_err(&mgr->pci->dev,
"error pipe start "
"(CMD_CAN_START_PIPE) err=%x!\n",
err);
return err;
}
/* if the pipe couldn't be prepaired for start,
* retry it later
*/
if (rmh.stat[0] == 0)
*retry |= (1<<audio);
}
audio_mask>>=1;
audio++;
}
return 0;
}
static int pcxhr_stop_pipes(struct pcxhr_mgr *mgr, int audio_mask)
{
struct pcxhr_rmh rmh;
int err;
int audio = 0;
while (audio_mask) {
if (audio_mask & 1) {
pcxhr_init_rmh(&rmh, CMD_STOP_PIPE);
if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET) {
/* stop playback pipe */
pcxhr_set_pipe_cmd_params(&rmh, 0, audio, 0, 0);
} else {
/* stop capture pipe */
pcxhr_set_pipe_cmd_params(&rmh, 1, audio -
PCXHR_PIPE_STATE_CAPTURE_OFFSET,
0, 0);
}
err = pcxhr_send_msg(mgr, &rmh);
if (err) {
dev_err(&mgr->pci->dev,
"error pipe stop "
"(CMD_STOP_PIPE) err=%x!\n", err);
return err;
}
}
audio_mask>>=1;
audio++;
}
return 0;
}
static int pcxhr_toggle_pipes(struct pcxhr_mgr *mgr, int audio_mask)
{
struct pcxhr_rmh rmh;
int err;
int audio = 0;
while (audio_mask) {
if (audio_mask & 1) {
pcxhr_init_rmh(&rmh, CMD_CONF_PIPE);
if (audio < PCXHR_PIPE_STATE_CAPTURE_OFFSET)
pcxhr_set_pipe_cmd_params(&rmh, 0, 0, 0,
1 << audio);
else
pcxhr_set_pipe_cmd_params(&rmh, 1, 0, 0,
1 << (audio - PCXHR_PIPE_STATE_CAPTURE_OFFSET));
err = pcxhr_send_msg(mgr, &rmh);
if (err) {
dev_err(&mgr->pci->dev,
"error pipe start "
"(CMD_CONF_PIPE) err=%x!\n", err);
return err;
}
}
audio_mask>>=1;
audio++;
}
/* now fire the interrupt on the card */
pcxhr_init_rmh(&rmh, CMD_SEND_IRQA);
err = pcxhr_send_msg(mgr, &rmh);
if (err) {
dev_err(&mgr->pci->dev,
"error pipe start (CMD_SEND_IRQA) err=%x!\n",
err);
return err;
}
return 0;
}
int pcxhr_set_pipe_state(struct pcxhr_mgr *mgr, int playback_mask,
int capture_mask, int start)
{
int state, i, err;
int audio_mask;
#ifdef CONFIG_SND_DEBUG_VERBOSE
ktime_t start_time, stop_time, diff_time;
start_time = ktime_get();
#endif
audio_mask = (playback_mask |
(capture_mask << PCXHR_PIPE_STATE_CAPTURE_OFFSET));
/* current pipe state (playback + record) */
state = pcxhr_pipes_running(mgr);
dev_dbg(&mgr->pci->dev,
"pcxhr_set_pipe_state %s (mask %x current %x)\n",
start ? "START" : "STOP", audio_mask, state);
if (start) {
/* start only pipes that are not yet started */
audio_mask &= ~state;
state = audio_mask;
for (i = 0; i < MAX_WAIT_FOR_DSP; i++) {
err = pcxhr_prepair_pipe_start(mgr, state, &state);
if (err)
return err;
if (state == 0)
break; /* success, all pipes prepaired */
mdelay(1); /* wait 1 millisecond and retry */
}
} else {
audio_mask &= state; /* stop only pipes that are started */
}
if (audio_mask == 0)
return 0;
err = pcxhr_toggle_pipes(mgr, audio_mask);
if (err)
return err;
i = 0;
while (1) {
state = pcxhr_pipes_running(mgr);
/* have all pipes the new state ? */
if ((state & audio_mask) == (start ? audio_mask : 0))
break;
if (++i >= MAX_WAIT_FOR_DSP * 100) {
dev_err(&mgr->pci->dev, "error pipe start/stop\n");
return -EBUSY;
}
udelay(10); /* wait 10 microseconds */
}
if (!start) {
err = pcxhr_stop_pipes(mgr, audio_mask);
if (err)
return err;
}
#ifdef CONFIG_SND_DEBUG_VERBOSE
stop_time = ktime_get();
diff_time = ktime_sub(stop_time, start_time);
dev_dbg(&mgr->pci->dev, "***SET PIPE STATE*** TIME = %ld (err = %x)\n",
(long)(ktime_to_ns(diff_time)), err);
#endif
return 0;
}
int pcxhr_write_io_num_reg_cont(struct pcxhr_mgr *mgr, unsigned int mask,
unsigned int value, int *changed)
{
struct pcxhr_rmh rmh;
int err;
mutex_lock(&mgr->msg_lock);
if ((mgr->io_num_reg_cont & mask) == value) {
dev_dbg(&mgr->pci->dev,
"IO_NUM_REG_CONT mask %x already is set to %x\n",
mask, value);
if (changed)
*changed = 0;
mutex_unlock(&mgr->msg_lock);
return 0; /* already programmed */
}
pcxhr_init_rmh(&rmh, CMD_ACCESS_IO_WRITE);
rmh.cmd[0] |= IO_NUM_REG_CONT;
rmh.cmd[1] = mask;
rmh.cmd[2] = value;
rmh.cmd_len = 3;
err = pcxhr_send_msg_nolock(mgr, &rmh);
if (err == 0) {
mgr->io_num_reg_cont &= ~mask;
mgr->io_num_reg_cont |= value;
if (changed)
*changed = 1;
}
mutex_unlock(&mgr->msg_lock);
return err;
}
#define PCXHR_IRQ_TIMER 0x000300
#define PCXHR_IRQ_FREQ_CHANGE 0x000800
#define PCXHR_IRQ_TIME_CODE 0x001000
#define PCXHR_IRQ_NOTIFY 0x002000
#define PCXHR_IRQ_ASYNC 0x008000
#define PCXHR_IRQ_MASK 0x00bb00
#define PCXHR_FATAL_DSP_ERR 0xff0000
enum pcxhr_async_err_src {
PCXHR_ERR_PIPE,
PCXHR_ERR_STREAM,
PCXHR_ERR_AUDIO
};
static int pcxhr_handle_async_err(struct pcxhr_mgr *mgr, u32 err,
enum pcxhr_async_err_src err_src, int pipe,
int is_capture)
{
static char* err_src_name[] = {
[PCXHR_ERR_PIPE] = "Pipe",
[PCXHR_ERR_STREAM] = "Stream",
[PCXHR_ERR_AUDIO] = "Audio"
};
if (err & 0xfff)
err &= 0xfff;
else
err = ((err >> 12) & 0xfff);
if (!err)
return 0;
dev_dbg(&mgr->pci->dev, "CMD_ASYNC : Error %s %s Pipe %d err=%x\n",
err_src_name[err_src],
is_capture ? "Record" : "Play", pipe, err);
if (err == 0xe01)
mgr->async_err_stream_xrun++;
else if (err == 0xe10)
mgr->async_err_pipe_xrun++;
else
mgr->async_err_other_last = (int)err;
return 1;
}
static void pcxhr_msg_thread(struct pcxhr_mgr *mgr)
{
struct pcxhr_rmh *prmh = mgr->prmh;
int err;
int i, j;
if (mgr->src_it_dsp & PCXHR_IRQ_FREQ_CHANGE)
dev_dbg(&mgr->pci->dev,
"PCXHR_IRQ_FREQ_CHANGE event occurred\n");
if (mgr->src_it_dsp & PCXHR_IRQ_TIME_CODE)
dev_dbg(&mgr->pci->dev,
"PCXHR_IRQ_TIME_CODE event occurred\n");
if (mgr->src_it_dsp & PCXHR_IRQ_NOTIFY)
dev_dbg(&mgr->pci->dev,
"PCXHR_IRQ_NOTIFY event occurred\n");
if (mgr->src_it_dsp & (PCXHR_IRQ_FREQ_CHANGE | PCXHR_IRQ_TIME_CODE)) {
/* clear events FREQ_CHANGE and TIME_CODE */
pcxhr_init_rmh(prmh, CMD_TEST_IT);
err = pcxhr_send_msg(mgr, prmh);
dev_dbg(&mgr->pci->dev, "CMD_TEST_IT : err=%x, stat=%x\n",
err, prmh->stat[0]);
}
if (mgr->src_it_dsp & PCXHR_IRQ_ASYNC) {
dev_dbg(&mgr->pci->dev,
"PCXHR_IRQ_ASYNC event occurred\n");
pcxhr_init_rmh(prmh, CMD_ASYNC);
prmh->cmd[0] |= 1; /* add SEL_ASYNC_EVENTS */
/* this is the only one extra long response command */
prmh->stat_len = PCXHR_SIZE_MAX_LONG_STATUS;
err = pcxhr_send_msg(mgr, prmh);
if (err)
dev_err(&mgr->pci->dev, "ERROR pcxhr_msg_thread=%x;\n",
err);
i = 1;
while (i < prmh->stat_len) {
int nb_audio = ((prmh->stat[i] >> FIELD_SIZE) &
MASK_FIRST_FIELD);
int nb_stream = ((prmh->stat[i] >> (2*FIELD_SIZE)) &
MASK_FIRST_FIELD);
int pipe = prmh->stat[i] & MASK_FIRST_FIELD;
int is_capture = prmh->stat[i] & 0x400000;
u32 err2;
if (prmh->stat[i] & 0x800000) { /* if BIT_END */
dev_dbg(&mgr->pci->dev,
"TASKLET : End%sPipe %d\n",
is_capture ? "Record" : "Play",
pipe);
}
i++;
err2 = prmh->stat[i] ? prmh->stat[i] : prmh->stat[i+1];
if (err2)
pcxhr_handle_async_err(mgr, err2,
PCXHR_ERR_PIPE,
pipe, is_capture);
i += 2;
for (j = 0; j < nb_stream; j++) {
err2 = prmh->stat[i] ?
prmh->stat[i] : prmh->stat[i+1];
if (err2)
pcxhr_handle_async_err(mgr, err2,
PCXHR_ERR_STREAM,
pipe,
is_capture);
i += 2;
}
for (j = 0; j < nb_audio; j++) {
err2 = prmh->stat[i] ?
prmh->stat[i] : prmh->stat[i+1];
if (err2)
pcxhr_handle_async_err(mgr, err2,
PCXHR_ERR_AUDIO,
pipe,
is_capture);
i += 2;
}
}
}
}
static u_int64_t pcxhr_stream_read_position(struct pcxhr_mgr *mgr,
struct pcxhr_stream *stream)
{
u_int64_t hw_sample_count;
struct pcxhr_rmh rmh;
int err, stream_mask;
stream_mask = stream->pipe->is_capture ? 1 : 1<<stream->substream->number;
/* get sample count for one stream */
pcxhr_init_rmh(&rmh, CMD_STREAM_SAMPLE_COUNT);
pcxhr_set_pipe_cmd_params(&rmh, stream->pipe->is_capture,
stream->pipe->first_audio, 0, stream_mask);
/* rmh.stat_len = 2; */ /* 2 resp data for each stream of the pipe */
err = pcxhr_send_msg(mgr, &rmh);
if (err)
return 0;
hw_sample_count = ((u_int64_t)rmh.stat[0]) << 24;
hw_sample_count += (u_int64_t)rmh.stat[1];
dev_dbg(&mgr->pci->dev,
"stream %c%d : abs samples real(%llu) timer(%llu)\n",
stream->pipe->is_capture ? 'C' : 'P',
stream->substream->number,
hw_sample_count,
stream->timer_abs_periods + stream->timer_period_frag +
mgr->granularity);
return hw_sample_count;
}
static void pcxhr_update_timer_pos(struct pcxhr_mgr *mgr,
struct pcxhr_stream *stream,
int samples_to_add)
{
if (stream->substream &&
(stream->status == PCXHR_STREAM_STATUS_RUNNING)) {
u_int64_t new_sample_count;
int elapsed = 0;
int hardware_read = 0;
struct snd_pcm_runtime *runtime = stream->substream->runtime;
if (samples_to_add < 0) {
stream->timer_is_synced = 0;
/* add default if no hardware_read possible */
samples_to_add = mgr->granularity;
}
if (!stream->timer_is_synced) {
if ((stream->timer_abs_periods != 0) ||
((stream->timer_period_frag + samples_to_add) >=
runtime->period_size)) {
new_sample_count =
pcxhr_stream_read_position(mgr, stream);
hardware_read = 1;
if (new_sample_count >= mgr->granularity) {
/* sub security offset because of
* jitter and finer granularity of
* dsp time (MBOX4)
*/
new_sample_count -= mgr->granularity;
stream->timer_is_synced = 1;
}
}
}
if (!hardware_read) {
/* if we didn't try to sync the position, increment it
* by PCXHR_GRANULARITY every timer interrupt
*/
new_sample_count = stream->timer_abs_periods +
stream->timer_period_frag + samples_to_add;
}
while (1) {
u_int64_t new_elapse_pos = stream->timer_abs_periods +
runtime->period_size;
if (new_elapse_pos > new_sample_count)
break;
elapsed = 1;
stream->timer_buf_periods++;
if (stream->timer_buf_periods >= runtime->periods)
stream->timer_buf_periods = 0;
stream->timer_abs_periods = new_elapse_pos;
}
if (new_sample_count >= stream->timer_abs_periods) {
stream->timer_period_frag =
(u_int32_t)(new_sample_count -
stream->timer_abs_periods);
} else {
dev_err(&mgr->pci->dev,
"ERROR new_sample_count too small ??? %ld\n",
(long unsigned int)new_sample_count);
}
if (elapsed) {
mutex_unlock(&mgr->lock);
snd_pcm_period_elapsed(stream->substream);
mutex_lock(&mgr->lock);
}
}
}
irqreturn_t pcxhr_interrupt(int irq, void *dev_id)
{
struct pcxhr_mgr *mgr = dev_id;
unsigned int reg;
bool wake_thread = false;
reg = PCXHR_INPL(mgr, PCXHR_PLX_IRQCS);
if (! (reg & PCXHR_IRQCS_ACTIVE_PCIDB)) {
/* this device did not cause the interrupt */
return IRQ_NONE;
}
/* clear interrupt */
reg = PCXHR_INPL(mgr, PCXHR_PLX_L2PCIDB);
PCXHR_OUTPL(mgr, PCXHR_PLX_L2PCIDB, reg);
/* timer irq occurred */
if (reg & PCXHR_IRQ_TIMER) {
int timer_toggle = reg & PCXHR_IRQ_TIMER;
if (timer_toggle == mgr->timer_toggle) {
dev_dbg(&mgr->pci->dev, "ERROR TIMER TOGGLE\n");
mgr->dsp_time_err++;
}
mgr->timer_toggle = timer_toggle;
mgr->src_it_dsp = reg;
wake_thread = true;
}
/* other irq's handled in the thread */
if (reg & PCXHR_IRQ_MASK) {
if (reg & PCXHR_IRQ_ASYNC) {
/* as we didn't request any async notifications,
* some kind of xrun error will probably occurred
*/
/* better resynchronize all streams next interrupt : */
mgr->dsp_time_last = PCXHR_DSP_TIME_INVALID;
}
mgr->src_it_dsp = reg;
wake_thread = true;
}
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (reg & PCXHR_FATAL_DSP_ERR)
dev_dbg(&mgr->pci->dev, "FATAL DSP ERROR : %x\n", reg);
#endif
return wake_thread ? IRQ_WAKE_THREAD : IRQ_HANDLED;
}
irqreturn_t pcxhr_threaded_irq(int irq, void *dev_id)
{
struct pcxhr_mgr *mgr = dev_id;
int i, j;
struct snd_pcxhr *chip;
mutex_lock(&mgr->lock);
if (mgr->src_it_dsp & PCXHR_IRQ_TIMER) {
/* is a 24 bit counter */
int dsp_time_new =
PCXHR_INPL(mgr, PCXHR_PLX_MBOX4) & PCXHR_DSP_TIME_MASK;
int dsp_time_diff = dsp_time_new - mgr->dsp_time_last;
if ((dsp_time_diff < 0) &&
(mgr->dsp_time_last != PCXHR_DSP_TIME_INVALID)) {
/* handle dsp counter wraparound without resync */
int tmp_diff = dsp_time_diff + PCXHR_DSP_TIME_MASK + 1;
dev_dbg(&mgr->pci->dev,
"WARNING DSP timestamp old(%d) new(%d)",
mgr->dsp_time_last, dsp_time_new);
if (tmp_diff > 0 && tmp_diff <= (2*mgr->granularity)) {
dev_dbg(&mgr->pci->dev,
"-> timestamp wraparound OK: "
"diff=%d\n", tmp_diff);
dsp_time_diff = tmp_diff;
} else {
dev_dbg(&mgr->pci->dev,
"-> resynchronize all streams\n");
mgr->dsp_time_err++;
}
}
#ifdef CONFIG_SND_DEBUG_VERBOSE
if (dsp_time_diff == 0)
dev_dbg(&mgr->pci->dev,
"ERROR DSP TIME NO DIFF time(%d)\n",
dsp_time_new);
else if (dsp_time_diff >= (2*mgr->granularity))
dev_dbg(&mgr->pci->dev,
"ERROR DSP TIME TOO BIG old(%d) add(%d)\n",
mgr->dsp_time_last,
dsp_time_new - mgr->dsp_time_last);
else if (dsp_time_diff % mgr->granularity)
dev_dbg(&mgr->pci->dev,
"ERROR DSP TIME increased by %d\n",
dsp_time_diff);
#endif
mgr->dsp_time_last = dsp_time_new;
for (i = 0; i < mgr->num_cards; i++) {
chip = mgr->chip[i];
for (j = 0; j < chip->nb_streams_capt; j++)
pcxhr_update_timer_pos(mgr,
&chip->capture_stream[j],
dsp_time_diff);
}
for (i = 0; i < mgr->num_cards; i++) {
chip = mgr->chip[i];
for (j = 0; j < chip->nb_streams_play; j++)
pcxhr_update_timer_pos(mgr,
&chip->playback_stream[j],
dsp_time_diff);
}
}
pcxhr_msg_thread(mgr);
return IRQ_HANDLED;
}
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